Facing Machine


General description
The pipe facing machines are built to cut precision chamfer on pipe ends with a thickness up to 1″ 1/2.
In the same time the internal pipe is perfectly centred to the machine.
The chamfer is made by means of widia cutting tools [up to six] hold by a tool holder fixed to a rotating platform [chuck] and operating simultaneously, in order to perform the wanted chamfer.
The chuck is driven by two hydraulic motors operated through a valve on the hydraulic panel.
The power and the speed of the motors is generated by a hydraulic power unit.
The speed of the motors can be adjusted by a valve on the hydraulic panel.
The chuck shift is done by a hydraulic piston fed from a low pressure oil circuit.
The shifting speed can be adjusted by a micrometric flow regulator.

mm. mm. mm. kg.
PFM 8″ – 14″ 1600 1100 1000 530
PFM 16″ – 24″ 2200 1100 1150 1000
PFM 24″- 32″ 2600 1250 1400 1800
PFM 34″- 42″ 3000 1400 1600 2570
PFM 40″- 50″ 3000 1650 1900 3200
PFM 48″- 60″ 3300 2100 2200 4300


Cianfrinatrice-04The H. P. U. are suitable to feed any kind of Pipe Facing Machine and feed the hydraulic motors through a high pressure circuit [170 Bar].
They are also equipped with a low pressure circuit to be connected to the Pipe Facing Machine with two separated circuits low and high pressure.
The pressure is generated by two pumps powered by an electrical motor or diesel engine with a power of 75 HP.

T ank Capaci ty LT. 400
SAE 10 W
Mai n Pump 160 LT . To 1500 RPM
Mai n Ci rcui te Pre ssure 170 BAR
Se condary Ci rcui te Pre ssure 30 BAR
Rotati on Spe e d Di e se l Engi ne 1.600 RPM
Rotati on Spe e d Ele ctri c Motor 380 V – 50 Hz 1470 Rpm
440 V – 60 Hz 1764 Rpm
Fi lte rs Phosphorous Brass 60 micron
Ne t We ight 1.600 Kg.


The Pipe Facing Machine cuts a precision bevel on pipe ends. (Up to l” 1/2 of thickness).
Hydraulically operated shoes extend to clamp the machine securely on place.
The pipe is brought into perfect round by this internal clamping action.
The bevel is made by widia cutting tools held by radial arms locked to a rotating faceplate working simultaneously, to make the requested chamfer.
The faceplate rotation is driven by one or two hydraulic motors operated by valves on the hydraulic manifold. The power of the motor comes from the pressure of the oil of the Hydraulic Power Unit (independent unit).
The rotation speed depends by the oil flow to the motors. Such flow can be regulated by a valve on the hydraulic manifold.
The faceplate feeding is made by an actuator fed by the oil coming from the exhaust of the motor and the pressure is regulated by a valve installed on the manifold. The feeding speed can be regulated by a micrometic flow control valve.

Main components description

Pipe facing section

This section consists of a faceplate, spindle, hydraulic motors, actuator, and various structural members.
The faceplate provides a mounting base for the radial arms.
The faceplate varies in overall size depending on the pipe facing machine configuration.
The spindle serves two main purposes: it provides a means of connection to the expander section and also provides the shaft on which the faceplate slides.
The hydraulic drive motors provide a uniform torque at low speed, through a tooth gear which matches with the faceplate gear and rotates the faceplate in a clockwise direction.
The actuator feeds the thrust to the faceplate into the pipe during bevelling, it has an adjustable feeding speed in order to get the desired feeding.

The expander section

The purpose of the expander section is to secure the pipe facing machine to the pipe, to remove “egg shape” from the pipe, and to square the faceplate with the pipe to insure a true cut. This is accomplished by hydraulically actuated, piston-driven shoes. The shoes are hydraulically actuated to both the extended and retracted positions.
The quantity of shoes per expander section depends upon the size of the Pipe Facing Machine.
The expander section consists of two identical clamp sections, held together by tie studs and a sleeve, front and rear wheel assemblies, a flow divider, and the required hoses and fittings.
Each clamp section contains a cylinder shell, power piston and rod, housing, hub, links, shoe pistons, spider, shoes, and a cover.
The number of tie stud assemblies per expander section varies from three to six depending on the size of the expander section. The tie stud assemblies, in addition to securing the two sections together, also contain the front wheel assemblies.
The front and rear wheel assemblies assist in inserting and extracting the Pipe Facing Machine from the pipe and prevents damage to internal coating of pipe.
The flow divider is pressure compensated and is used for simultaneous expansion of clamp shoes. It performs in either direction: total flow is divided to the two power pistons and return flow is combined from the two power pistons. The shoes ore available in many sizes.
They are 0,29 up to 2 inches in height.

Hydraulic manifold

The hydraulic manifold is an aluminium block which has been drilled and tapped in a manner which will permit controlled flow of hydraulic fluid through attached valves. The flow divider has a flow range from 10 to 40 GPM and a differential pressure range from 20 to 3000 psi.
The manifold is used to control faceplate rotation, clamp operation, faceplate feed and faceplate travel. It also provides a means of pressure indication and relief and flow control.
Attached to the manifold ore four control valves, two flow control valves, a pressure control/relief valve, a spring loaded relief valve, three pressure gauges, and the necessary fittings and hoses.

Radial arm assembly

The radial arm assembly consists of a tool holder (with cutting tool), guide roller assembly, spring, brush, and the necessary bearings, spacers, and screws.
There are three, four, or six radial arms on the Pipe Facing Machine.
These assemblies hold the cutting tools, provide a constant load, and enable fine vertical adjustments of the cutting tools.
The constant load is obtained by the guide roller contacting the inside of the pipe and compressing the spring.
The tool holders are held in place by five collar screws, a spacer plate, and several shims. The cutting tools are attached to the tool holder with a lock-pin and seat.

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